“If you vote to cut Medicare, Senator Brown – I will remember it every time I visit my doctor,” an elderly announcer states in the 30-second spot sponsored by the American Federation of State, County and Municipal Employees, Service Employees International Union, and Americans United for Change.

The background material the groups issued in support of the ad cite, in part, the ongoing work of the so-called Super Committee of Congressional Democrats and Republicans wrangling in Washington over ways to reduce the federal debt.

Brown is not on the committee and has little or no say in its final recommendations.

His Bay State counterpart, however, Democratic US Senator John Kerry, is a member, and has much more influence on the final budget compromise. But, of course, in terms of raw politics, Kerry is not a potentially vulnerable Republican facing reelection in a Democratic state, as is Brown.

“Scott Brown is the only member of the Massachusetts delegation who has not voted to cut Medicare,” Brown spokesman Colin Reed said today. “He not only opposed Obamacare and its half a trillion in cuts to Medicare, but also voted against the Ryan budget that would have fundamentally changed the program.”

The ad will run through the end of the week, according to its sponsors.